Abstract : Twenty XM10E1 Catapults were loaded and assembled. The catapults were installed and instrumented aboard the B-47 in May 1962 for one thru three summer exposure to elevated temperature and solar radiation. A partial sample of the catapults was withdrawn from the aircraft each fall over a three year period. The sample catapults were disassembled and a visual inspection was made of the metallic and explosive components. A dimensional survey of the propellant grain and strip propellant was made in order to determine the extent of changes in geometry. Ballistic tests were conducted over the temperature range of -65F to 165F with the test items after 'one, two, and three summer exposure.' Test firings were done. Simulating pre-flight conditions, a series of ventilating and air conditioning tests were conducted in the cabin of the aircraft to determine the thermal effects on the installed catapults. (Author)